Hi,

I got my hands on packaging liskvork, a gomoku server.  The build fails
because dependencies of dependencies are not added to the zig cache, and
so can’t be found correctly by the zig build system.

I attached a patch that reproduces this, a workaround when reproducing
the steps in a local checkout is to call “zig fetch” on the missing
dependencies:

$ zig fetch /gnu/store/j0x1vl6w2vgr3fz60l4jgyx5gx53af61-zig-httpz-0-0.7d2ddae/src/zig-httpz-0-0.7d2ddae --save=httpz
warning: overwriting existing dependency named 'httpz'
$ zig build --summary all
/home/noe/.cache/zig/p/1220476906a8f57d6cbaaaeb05d44a41311a5bb6ca74bb86bc3aa1467506c241b29b/build.zig.zon:7:20: error: invalid URI: UnexpectedCharacter
$ zig fetch /gnu/store/59w4s1g1y4vy4gw3mwn9fjsfcqc5454i-zig-metrics-0-0.fcf9e94/src/zig-metrics-0-0.fcf9e94 --save=metrics
$ zig fetch /gnu/store/izxqkxplp7alrh0n3c8j8cv277nqa04a-zig-websocket-0-0.cf89cb8/src/zig-websocket-0-0.cf89cb8 --save=websocket
$ zig build --summary all
Build Summary: 5/5 steps succeeded
install success
+- install liskvork success
   +- zig build-exe liskvork Debug native-native success 3s MaxRSS:276M
      +- options cached
      +- options cached

This has the issue of adding the packages to build.zig.zon, so a better
solution is required.

I’m attaching the patch with the liskvork package and dependencies. The
error can be reproduced with “./pre-inst-env guix build liskvork”.

Have a nice day,
Noé